dry distillation is the heating of solid materials to produce gaseous products which may condense into liquids or solids . the method may involve pyrolysis or thermolysis, or it may not for instance, a simple mixture of ice and glass could be separated without breaking any chemical bonds, but organic matter contains a greater diversity of molecules, some of which are likely to break .
in some circumstances, mainly depending on the origin and the composition of the seven trust materials used, the high-temperature calcination process of limestone and clay minerals can release in the atmosphere gases and dust rich in volatile heavy metals, e.g. thallium, cadmium and mercury are the most toxic.
although the setting process can be slow, the drying time of a lime mortar must be regulated at a slow rate to ensure a good final set. a rapidly dried lime mortar will result in a low-strength, poor-quality final mortar often displaying shrinkage cracks.
nixtamalization / n ɪ ʃ t ə m əl aɪ ˈ z eɪ ʃ ən / is a process for the preparation of maize corn , or other grain, in which the corn is soaked and cooked in an alkaline solution, usually limewater but sometimes wood ash lye citation needed , washed, and then hulled.
diagenesis / ˌ d aɪ ə ˈ dʒ ɛ n ɪ s ɪ s / is the process that describes physical and chemical changes in sediments caused by increasing temperature and pressure as they get buried in the earth's crust. in the early stages, this transformation of sediment into sedimentary rock, lithification is accompanied simply by a reduction in porosity, while its component mineralogy remains .
desiccation from latin de- 'thorougly' siccare 'to dry' is the state of extreme dryness, or the process of extreme drying. a desiccant is a hygroscopic attracts and holds water substance that induces or sustains such a state in its local vicinity in a moderately sealed container.
the effect of this process was to desiliconise the metal, leaving a white brittle metal, known as 'finers metal'. this was the ideal material to charge to the puddling furnace. this version of the process was known as 'dry puddling' and continued in use in some places as late as 1890.
fgd has been fitted by rwe npower at aberthaw power station in south wales using the seawater process and works successfully on the 1580mw plant. approximately 85% of the flue gas desulfurization units installed in the us are wet scrubbers, 12% are spray dry systems, and 3% are dry injection systems. the highest so
in the dry process, it is very difficult to keep the fine powder mix in the kiln, because the fast-flowing combustion gases tend to blow it back out again. it became a practice to spray water into dry kilns in order to 'damp down' the dry mix, and thus, for many years there was little difference in efficiency between the two processes, and the overwhelming majority of kilns used the wet .